20011212100222 has 48 divisors (see below), whose sum is σ = 35656097339520. Its totient is φ = 8396400185712.

The previous prime is 20011212100189. The next prime is 20011212100259. The reversal of 20011212100222 is 22200121211002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011212100196 and 20011212100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8278522 + ... + 10419037.

It is an arithmetic number, because the mean of its divisors is an integer number (742835361240).

Almost surely, 2^{20011212100222} is an apocalyptic number.

20011212100222 is a deficient number, since it is larger than the sum of its proper divisors (15644885239298).

20011212100222 is a wasteful number, since it uses less digits than its factorization.

20011212100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18697805 (or 18697798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20011212100222 its reverse (22200121211002), we get a palindrome (42211333311224).

The spelling of 20011212100222 in words is "twenty trillion, eleven billion, two hundred twelve million, one hundred thousand, two hundred twenty-two".